4 files changed, 141 insertions, 0 deletions
diff --git a/src/server/repositories/index.ts b/src/server/repositories/index.ts
new file mode 100644
index 0000000..04b1f35
--- /dev/null
+++ b/src/server/repositories/index.ts
@@ -0,0 +1,3 @@
+export { refreshTokenRepository } from "./refresh-token.js";
+export * from "./types.js";
+export { userRepository } from "./user.js";
diff --git a/src/server/repositories/refresh-token.ts b/src/server/repositories/refresh-token.ts
new file mode 100644
index 0000000..e92a744
--- /dev/null
+++ b/src/server/repositories/refresh-token.ts
@@ -0,0 +1,35 @@
+import { and, eq, gt } from "drizzle-orm";
+import { db, refreshTokens } from "../db/index.js";
+import type { RefreshTokenRepository } from "./types.js";
+
+export const refreshTokenRepository: RefreshTokenRepository = {
+	async findValidToken(tokenHash) {
+		const [token] = await db
+			.select({
+				id: refreshTokens.id,
+				userId: refreshTokens.userId,
+				expiresAt: refreshTokens.expiresAt,
+			})
+			.from(refreshTokens)
+			.where(
+				and(
+					eq(refreshTokens.tokenHash, tokenHash),
+					gt(refreshTokens.expiresAt, new Date()),
+				),
+			)
+			.limit(1);
+		return token;
+	},
+
+	async create(data) {
+		await db.insert(refreshTokens).values({
+			userId: data.userId,
+			tokenHash: data.tokenHash,
+			expiresAt: data.expiresAt,
+		});
+	},
+
+	async deleteById(id) {
+		await db.delete(refreshTokens).where(eq(refreshTokens.id, id));
+	},
+};
diff --git a/src/server/repositories/types.ts b/src/server/repositories/types.ts
new file mode 100644
index 0000000..1ab4bdc
--- /dev/null
+++ b/src/server/repositories/types.ts
@@ -0,0 +1,46 @@
+/**
+ * Repository types for abstracting database operations
+ */
+
+export interface User {
+	id: string;
+	username: string;
+	passwordHash: string;
+	createdAt: Date;
+	updatedAt: Date;
+}
+
+export interface UserPublic {
+	id: string;
+	username: string;
+	createdAt: Date;
+}
+
+export interface RefreshToken {
+	id: string;
+	userId: string;
+	tokenHash: string;
+	expiresAt: Date;
+	createdAt: Date;
+}
+
+export interface UserRepository {
+	findByUsername(
+		username: string,
+	): Promise<Pick<User, "id" | "username" | "passwordHash"> | undefined>;
+	existsByUsername(username: string): Promise<boolean>;
+	create(data: { username: string; passwordHash: string }): Promise<UserPublic>;
+	findById(id: string): Promise<Pick<User, "id" | "username"> | undefined>;
+}
+
+export interface RefreshTokenRepository {
+	findValidToken(
+		tokenHash: string,
+	): Promise<Pick<RefreshToken, "id" | "userId" | "expiresAt"> | undefined>;
+	create(data: {
+		userId: string;
+		tokenHash: string;
+		expiresAt: Date;
+	}): Promise<void>;
+	deleteById(id: string): Promise<void>;
+}
diff --git a/src/server/repositories/user.ts b/src/server/repositories/user.ts
new file mode 100644
index 0000000..e571409
--- /dev/null
+++ b/src/server/repositories/user.ts
@@ -0,0 +1,57 @@
+import { eq } from "drizzle-orm";
+import { db, users } from "../db/index.js";
+import type { UserPublic, UserRepository } from "./types.js";
+
+export const userRepository: UserRepository = {
+	async findByUsername(username) {
+		const [user] = await db
+			.select({
+				id: users.id,
+				username: users.username,
+				passwordHash: users.passwordHash,
+			})
+			.from(users)
+			.where(eq(users.username, username))
+			.limit(1);
+		return user;
+	},
+
+	async existsByUsername(username) {
+		const [user] = await db
+			.select({ id: users.id })
+			.from(users)
+			.where(eq(users.username, username))
+			.limit(1);
+		return user !== undefined;
+	},
+
+	async create(data): Promise<UserPublic> {
+		const [newUser] = await db
+			.insert(users)
+			.values({
+				username: data.username,
+				passwordHash: data.passwordHash,
+			})
+			.returning({
+				id: users.id,
+				username: users.username,
+				createdAt: users.createdAt,
+			});
+		if (!newUser) {
+			throw new Error("Failed to create user");
+		}
+		return newUser;
+	},
+
+	async findById(id) {
+		const [user] = await db
+			.select({
+				id: users.id,
+				username: users.username,
+			})
+			.from(users)
+			.where(eq(users.id, id))
+			.limit(1);
+		return user;
+	},
+};